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authorHaggai Eran <haggaie@mellanox.com>2014-12-11 18:04:14 +0300
committerRoland Dreier <roland@purestorage.com>2014-12-16 05:13:35 +0300
commitc1395a2a8c01e8a919e47d64eb3d23d00e824b8b (patch)
tree14c4baa698685dc3e59412a37e9774be1dc8fe09 /include
parentc5d76f130b286682b64c659eaf6af701e3d79a7b (diff)
downloadlinux-c1395a2a8c01e8a919e47d64eb3d23d00e824b8b.tar.xz
IB/mlx5: Add function to read WQE from user-space
Add a helper function mlx5_ib_read_user_wqe to read information from user-space owned work queues. The function will be used in a later patch by the page-fault handling code in mlx5_ib. Signed-off-by: Haggai Eran <haggaie@mellanox.com> [ Add stub for ib_umem_copy_from() for CONFIG_INFINIBAND_USER_MEM=n - Roland ] Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/mlx5/qp.h3
-rw-r--r--include/rdma/ib_umem.h5
2 files changed, 7 insertions, 1 deletions
diff --git a/include/linux/mlx5/qp.h b/include/linux/mlx5/qp.h
index 3fa075daeb1d..67f4b9660b06 100644
--- a/include/linux/mlx5/qp.h
+++ b/include/linux/mlx5/qp.h
@@ -189,6 +189,9 @@ struct mlx5_wqe_ctrl_seg {
__be32 imm;
};
+#define MLX5_WQE_CTRL_DS_MASK 0x3f
+#define MLX5_WQE_DS_UNITS 16
+
struct mlx5_wqe_xrc_seg {
__be32 xrc_srqn;
u8 rsvd[12];
diff --git a/include/rdma/ib_umem.h b/include/rdma/ib_umem.h
index 45bb04bc88cd..a51f4091489a 100644
--- a/include/rdma/ib_umem.h
+++ b/include/rdma/ib_umem.h
@@ -98,7 +98,10 @@ static inline struct ib_umem *ib_umem_get(struct ib_ucontext *context,
}
static inline void ib_umem_release(struct ib_umem *umem) { }
static inline int ib_umem_page_count(struct ib_umem *umem) { return 0; }
-
+static inline int ib_umem_copy_from(void *dst, struct ib_umem *umem, size_t offset,
+ size_t length) {
+ return -EINVAL;
+}
#endif /* CONFIG_INFINIBAND_USER_MEM */
#endif /* IB_UMEM_H */